Solution Deposited Layers for Joining Coated Conductors

G. Kotzyba, A. Will, A. Jung, B. Ringsdorf,
R. Nast, W. Goldacker, O. Stadel, R. Yu. Muydinov

Abstract — We present first joining experiments of YBCO layers from commercial tapes. Additionally applied MOD coatings are proposed and considered to improve this technique to achieve in future a fully superconducting connection, in particular of future striated tapes. Furthermore, the achieved excellent performance of MOD layers for buffers and non-fluorine YBCO is presented. The quality of the crack-free and excellent cube textured buffer coatings is demonstrated by MOCVD of YBCO on top, which resulted in critical current densities up to 2.1 MA/cm². F-free MOD of YBCO was successfully performed on SrTiO₃ (100) single crystals with critical current densities up to 2.8 MA/cm². On all solution deposited samples YBCO showed inhibited transport current caused by BaCO₃ and BaCeO₃ formation.

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